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A clean pulping process of dissociated modified plant fiber

A plant fiber, clean pulping technology, applied in fiber raw materials, fiber raw material processing, textiles and papermaking, etc., can solve the problems of poor dissociation and pollution of plant fibers, save pulp washing and bleaching processes, and improve pulping quality Effect

Active Publication Date: 2016-06-15
山东省壮丰环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Specifically, the technical problem to be solved by the present invention is to provide a clean pulping process of dissociated modified plant fibers to solve the current pulping process containing sodium hydroxide or lye that causes pollution and poor dissociation of plant fibers. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Poplar as pulp plant fiber raw material

[0055] A clean pulping process of dissociated modified plant fibers, comprising the steps of:

[0056] (1) Raw material pretreatment:

[0057] The plant fiber raw material is crushed and coarsely ground, placed in a film processor, reagent A is added, and the reaction is continued for 1.5 hours at a temperature of 90°C to obtain the initial material, wherein the reagent A is composed of biological enzyme 3wt%, water 97wt% Composition, the biological enzyme is delipase, the ratio of the added weight of reagent A to the dry weight of the plant fiber raw material is 1:5;

[0058] (2) Coarse slurry preparation:

[0059] The initial material obtained in step (1) was mixed with reagent B in a steam chamber, and the reaction was continued for 1.5 hours at a temperature of 80°C,

[0060] Wherein, the ratio of the added weight of the reagent B to the dry weight of the plant fiber raw material is 1:3, and the reagent B is composed of t...

Embodiment 2

[0075] Using bamboo willow as raw material of pulp plant fiber

[0076] A clean pulping process of dissociated modified plant fibers, comprising the steps of:

[0077] (1) Raw material pretreatment:

[0078] The plant fiber raw material is crushed and coarsely ground, placed in a film processor, reagent A is added, and the reaction is continued for 1.0 hour at a temperature of 80°C to obtain the raw material, wherein the reagent A is composed of 1 wt% of biological enzyme and 99 wt% of water Composition, the biological enzyme is delipase, the ratio of the added weight of reagent A to the dry weight of the plant fiber raw material is 1:6;

[0079] (2) Coarse slurry preparation:

[0080] The initial material obtained in step (1) was mixed with reagent B in a steam chamber, and the reaction was continued for 2.5 hours at a temperature of 90°C,

[0081] Wherein, the reagent B is made up of the following components by weight: ethanol 0.5, surfactant 2, water 80, stabilizer 0.8 a...

Embodiment 3

[0095] Wheat straw is used as pulp plant fiber raw material

[0096] A clean pulping process of dissociated modified plant fibers, comprising the steps of:

[0097] (1) Raw material pretreatment:

[0098] The plant fiber raw material is crushed and coarsely ground, placed in a film processor, reagent A is added, and the reaction is continued for 1.2 hours at a temperature of 85°C to obtain the raw material, wherein the reagent A is composed of 2 wt% of biological enzyme and 98 wt% of water Composition, the biological enzyme is delipase, the ratio of the added weight of reagent A to the dry weight of the plant fiber raw material is 1:4;

[0099] (2) Coarse slurry preparation:

[0100] The initial material obtained in step (1) was mixed with reagent B in a steam chamber, and the reaction was continued for 1.8 hours at a temperature of 75°C,

[0101] Wherein, reagent B is made up of the following components by weight: ethanol 3, surfactant 1.5, water 85, stabilizer 0.8 and delig...

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PUM

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Abstract

The invention discloses a clean pulping process for dissociated modified plant fibers. The clean pulping process comprises the following steps: (1) pre-processing raw materials; (2) preparing coarse pulp; (3) pulping; (4) removing sand; (5) screening; and (6) concentrating and extruding pulp. According to the clean pulping process disclosed by the invention, no sodium hydroxide is added, pulp-washing and bleaching processes can be reduced, and the wastewater in the pulping process can be sufficiently reutilized through simple treatment, so that pulping black liquor which is severely polluted is not produced. Meanwhile, plant fibers can be sufficiently dissociated, and the pulping quality is greatly improved.

Description

technical field [0001] The invention relates to the technical field of pulping technology, in particular to a clean pulping technology of dissociated modified plant fibers. Background technique [0002] Pulp and papermaking is an industry that will never decline, and it is also a pillar industry of my country's national economy. However, the papermaking industry is one of the main industries that pollute the environment. Its total wastewater discharge ranks third in industrial wastewater. Therefore, the papermaking wastewater treatment technology It has always been a research hotspot in the paper industry and environmental protection circles at home and abroad. [0003] Many patent documents also disclose a variety of pulping technologies, most of which try to fundamentally overcome or reduce the pollution of pulping black liquor. [0004] For example, the invention patent of the notification number CN1621610 "Soaking Wheat Straw Pulping Process without Cooking Drugs", this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C5/00D21B1/16
Inventor 李风志
Owner 山东省壮丰环境工程有限公司
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